Trane YCZ036F1/3M0B, YCZ035F1 manual High Altitude Installation, Input Check and Adjustment

GAS PIPING INSTALLATION

INPUT CHECK AND ADJUSTMENT

1.Make sure all gas appliances are off except the furnace.

2.Clock the gas meter with the furnace operating (determine the dial rating of the meter) for one revolution.

3.Match the “Sec” column in the gas flow (in cfh) Table 3 with the time clocked.

4.Read the “Flow” column opposite the number of seconds clocked.

5.Use the following factors if necessary.

For 1 Cu. Ft. Dial Gas Flow CFH =

Chart Flow Reading / 2

For 1/2 Cu Ft. Dial Gas Flow CFH =

Chart Flow Reading / 4

For 5 Cu. Ft. Dial Gas Flow CFH =

10X Chart Flow Reading / 4

6.Multiply the final figure by the heating value of the gas obtained from the utility company and compare to the nameplate rating. This must not exceed the nameplate rating.

7.Changes can be made by adjusting the manifold pressure.

a.Attach a manifold pressure gauge.

b.Remove the slot screw on top of the gas valve for 1st stage manifold pressure adjustment. Remove slot screw on outlet side for 2nd stage adjustment (See Figure 17).

c.Turn the adjustment nut in to increase the gas flow rate, and out to decrease the gas flow rate using a 3/32" hex wrench.

Note:

If Model YCZ036F1,3M is installed in a region where NOX must be below 40 nanograms per input to 72,000 BTUH.

HIGH ALTITUDE INSTALLATION

Unit nameplate ratings are based on equipment operation from sea level to 2000 feet elevation above sea level. If the unit installation is from 2000 - 4500 feet elevation, it will be necessary to change the burner orifices to the noted sizes, (ref. National Fuel Gas Code, sec 8.1.2, Appendix F, Table F4).

GAS	MAN. PRESS	ORIFICE SIZE	ORIFICE SIZE
TYPE	( in. W.C. )	0 - 2000 ft	2000 - 4500 ft
NATURAL	3.3	42*	43
PROPANE	10.0	54	55

*FACTORY SHIPPED

TABLE 3

GAS FLOW IN CUBIC FEET PER HOUR

2 CUBIC FOOT DIAL

Sec.	Flow	Sec.	Flow	Sec.	Flow	Sec.	Flow
8	900	29	248	50	144	82	88
9	800	30	240	51	141	84	86
10	720	31	232	52	138	86	84
11	655	32	225	53	136	88	82
12	600	33	218	54	133	90	80
13	555	34	212	55	131	92	78
14	514	35	206	56	129	94	76
15	480	36	200	57	126	96	75
16	450	37	195	58	124	98	73
17	424	38	189	59	122	100	72
18	400	39	185	60	120	104	69
19	379	40	180	62	116	108	67
20	360	41	176	64	112	112	64
21	343	42	172	66	109	116	62
22	327	43	167	68	106	120	60
23	313	44	164	70	103	124	58
24	300	45	160	72	100	128	56
25	288	46	157	74	97	132	54
26	277	47	153	76	95	136	53
27	267	48	150	78	92	140	51
28	257	49	147	80	90	144	50

u

2nd Stage (Hi)

Manifold

Pressure

Adjustment

1st Stage (Lo)

Manifold

Pressure

Adjustment

Switch Toggles

"ON" or "OFF"

Page 15